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Finding the Fourth Proportional to 285,417.72, 393,903.11 and 158,093.41

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Solution

The fourth proportional to 285,417.72, 393,903.11 and 158,093.41 is: 218,183.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,417.72 : 393,903.11 = 158,093.41 : x
  2. Step 2: Convert to fraction form
    285,417.72/393,903.11 = 158,093.41/x
  3. Step 3: Cross multiply
    285,417.72x = 393,903.11 × 158,093.41
  4. Step 4: Simplify right side
    285,417.72x = 62,273,485,869.51
  5. Step 5: Solve for x
    x = 62,273,485,869.51/285,417.72
  6. Step 6: Final answer
    x = 218,183.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.